沁水盆地南部地区砂体与煤层空间叠置特征及其在煤层气和致密气合采开发中的意义
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摘要
以沁水盆地南部煤层气和致密气共探合采研究区为例,详细解剖煤系地层砂体发育特征及其与煤层空间叠置关系,并探讨其对煤层气与致密气合采开发的影响。研究结果表明,煤系地层砂体成因类型丰富,砂体规模和形态特征各异。砂体结构特征主要受沉积相演化控制,形成五种主要空间叠置类型:孤立分散型、水平搭接型、垂向叠置型、错位叠置型和水平-错位复合叠置型。在沉积作用控制下,不同成因类型砂体与煤层可以形成多种空间叠置组合模式。砂体含气饱和度和压力及煤层含气量、物性和压力均受到两者空间叠置关系的显著影响。加强该方面研究,将对两气合采可行性评估及合采产气量预测具有重要意义。
Taking the southern Qinshui Basin as an example,the hot spot area for the study on co-exploration and commingled production for coal-bed methane and tight gas. Through detailed analysis of the spatial combination of sand body and superimposition relationship between sand body and coal seam,its implications to commingling production for coal-bed methane and tight gas were discussed. It is showed that the sand bodies developed in coalbearing strata with multiple genetic types,sand body scales and morphological characteristics. The characteristics of sand body architecture were mainly controlled by the sedimentary facies evolution. The spatial combination of sand bodies could be divided into five common types including isolated lenticular sand body,horizontal connection sand body,vertical superimposition sand body,lateral separation sand body and composite overlay sand body. Under the control of deposition,the multiple superimposition relationships between sand body and coal seam were formed.And the superimposition relationships have significant effects on gas saturation of sandstone,pressure in sandstone,coalbed gas content,properties of coal reservoirs and coal reservoir pressure,would control the feasibility and production of commingled production for coal-bed methane and tight gas.
Taking the southern Qinshui Basin as an example,the hot spot area for the study on co-exploration and commingled production for coal-bed methane and tight gas. Through detailed analysis of the spatial combination of sand body and superimposition relationship between sand body and coal seam,its implications to commingling production for coal-bed methane and tight gas were discussed. It is showed that the sand bodies developed in coalbearing strata with multiple genetic types,sand body scales and morphological characteristics. The characteristics of sand body architecture were mainly controlled by the sedimentary facies evolution. The spatial combination of sand bodies could be divided into five common types including isolated lenticular sand body,horizontal connection sand body,vertical superimposition sand body,lateral separation sand body and composite overlay sand body. Under the control of deposition,the multiple superimposition relationships between sand body and coal seam were formed.And the superimposition relationships have significant effects on gas saturation of sandstone,pressure in sandstone,coalbed gas content,properties of coal reservoirs and coal reservoir pressure,would control the feasibility and production of commingled production for coal-bed methane and tight gas.
引文
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3赵庆波,陈刚,李贵中.中国煤层气富集高产规律、开采特点及勘探开发适用技术[J].天然气工业,2009,2(9):13-19,130Zhao Qingbo,Chen Gang,Li Guizhong.The regular patterns of highly-produced CBM,its production performance and the progress of prospecting technologies in China[J].Natural Gas Industry,2009,2(9):13-19,130
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5岑学齐,吴晓东,梁伟,等.煤层气井产能影响因素分析[J].科学技术与工程,2014,14(4):201-204,216Cen Xueqi,Wu Xiaodong,Liang Wei,et al.Analysis of factors affecting productitity of coalbed gas wells[J].Science Technology and Engineering,2014,14(4):201-204,216
6张敏,丁文龙,尹帅.沁水盆地南部地区石炭-二叠系古构造恢复及对煤层气的控制作用[J].科学技术与工程,2016,16(21):34-40Zhang Min,Ding Wenlong,Yin Shuai.Paleostructural restoration and its controlling effect to coal-bed methane of the CarboniferousPermian strata in Southern Qinshui Basin[J].Science Technology and Engineering,2016,16(21):34-40
7邵先杰,朱明,武宁,等.煤层气聚集理论研究进展综述[J].科学技术与工程,2017,17(26):156-164Shao Xianjie,Zhu Ming,Wu Ning,et al.Research progress and review on coal-bed methane accumulation theory[J].Science Technology and Engineering,2017,17(26):156-164
8冯其红,张先敏,张纪远,等.煤层气与相邻砂岩气藏合采数值模拟研究[J].煤炭学报,2014,39(增刊1):169-173Feng Qihong,Zhang Xianmin,Zhang Jiyuan,et al.Numerical simulation of commingling production for coalbed methane and adjoining sandstone gas reservoirs[J].Journal of China Coal Society,2014,39(S1):169-173
9梁宏斌,林玉祥,钱铮,等.沁水盆地南部煤系地层吸附气与游离气共生成藏研究[J].中国石油勘探,2011,16(2):72-78,88Liang Hongbin,Lin Yuxiang,Qian Zheng,et al.Study on coexistence of absorbed gas and free gas in coal strata South of Qinshui Basin[J].China Petroleum Exploration,2011,16(2):72-78,88
10秦勇,梁建设,申建,等.沁水盆地南部致密砂岩和页岩的气测显示与气藏类型[J].煤炭学报,2014,39(8):1559-1565Qin Yong,Liang Jianshe,Shen Jian,et al.Gas logging shows and gas reservoir types in tight sandstones and shales from Southern Qinshui Basin[J].Journal of China Coal Society,2014,39(8):1559-1565
11梁建设,王存武,柳迎红,等.沁水盆地致密气成藏条件与勘探潜力研究[J].天然气地球科学,2014,25(10):1509-1519Liang Jianshe,Wang Cunwu,Liu Yinghong,et al.Study on the tight gas accumulation conditions and exploration potential in the Qinshui Basin[J].Natural Gas Geosciences,2014,25(10):1509-1519
12朱筱敏,刘长利,张义娜,等.地震沉积学在陆相湖盆三角洲砂体预测中的应用[J].沉积学报,2009,27(5):915-921Zhu Xiaomin,Liu Changli,Zhang Yina,et al.On seismic sedimentology of lacustrine deltaic depositional systems[J].Acta Sedimentologica Sinica,2009,27(5):915-921
13吴键,李凡华.三维地质建模与地震反演结合预测含油单砂体[J].石油勘探与开发,2009,36(5):623-627Wu Jian,Li Fanhua.Prediction of oil-bearing single sandbody by3D geological modeling combined with seismic inversion[J].Petroleum Exploration and Development,2009,36(5):623-627
14封从军,鲍志东,张吉辉,等.扶余油田中区泉四段基准面旋回划分及对单砂体的控制[J].吉林大学学报(地球科学版),2012,42(增刊2):62-69Feng Congjun,Bao Zhidong,Zhang Jihui,et al.Dividing of baselevel cycle and its controlling on single sand body in the fourth member of Quantou formation in Fuyu oilfield[J].Journal of Jilin University(Earth Science Edition),2012,42(S2):62-69
15赵宝峰,王家豪,徐东浩,等.松辽盆地新立---新北地区嫩江组三段浅水三角洲水下分流河道砂体半定量解剖[J].沉积学报,2012,30(3):511-521Zhao Baofeng,Wang Jiahao,Xu Donghao,et al.Semi-quantitative research on subaqueous distributary channel sandbodies of the 3th member of Nenjiang formation in Xinli-Xinbei area,Songliao Basin[J].Acta Sedimentologica Sinica,2012,30(3):511-521
16王家豪,陈红汉,江涛,等.松辽盆地新立地区浅水三角洲水下分流河道砂体结构解剖[J].地球科学(中国地质大学学报),2012,37(3):556-564Wang Jiahao,Chen Honghan,Jiang Tao,et al.Sandbodies frameworks of subaqueous distributary channel in shallow-water delta,Xinli area of Songliao Basin[J].Earth Science(Journal of China University of Geosciences),2012,37(3):556-564
17戴金星,邹才能,陶士振,等.中国大气田形成条件和主控因素[J].天然气地球科学,2007,18(4):473-484Dai Jinxing,Zou Caineng,Tao Shizheng,et al.Formation conditions and main controlling factors of large gas fields in China[J].Natural Gas Geosciences,2007,18(4):473-484
18赵文智,卞从胜,徐兆辉.苏里格气田与川中须家河组气田成藏共性与差异[J].石油勘探与开发,2013,40(4):400-408Zhao Wenzhi,Bian Congsheng,Xu Zhaohui.Similarities and differences between natural gas accumulations in Sulige gas field in Ordos basin and Xujiahe gas field in central Sichuan Basin[J].Petroleum Exploration and Development,2013,40(4):400-408
19杨华,付金华,刘新社,等.鄂尔多斯盆地上古生界致密气成藏条件与勘探开发[J].石油勘探与开发,2012,39(3):295-303Yang Hua,Fu Jinhua,Liu Xinshe,et al.Accumulation conditions and exploration and development of tight gas in the Upper Paleozoic of the Ordos Basin[J].Petroleum Exploration and Development,2012,39(3):295-303
20 Gibling M R.Width and thickness of fluvial channel bodies and valley fills in the geological record:A literature compilation and cassification[J].Journal of Sedimentary Research,2006,76(5):731-770
21 Olsen Torben.Large fluvial systems:the Atane Formation,a fluviodeltaic example from the Upper Cretaceous of central west greenland[J].Sedimentary Geology,1993,85(1):457-473
22张松航,汤达祯,唐书恒,等.鄂尔多斯盆地东缘煤层气储集与产出条件[J].煤炭学报,2009,34(10):1297-1304Zhang Songhang,Tang Dazhen,Tang Shuheng,et al.Preservation and deliverability characteristics of coalbed methane in east margin of Ordos Basin[J].Journal of China Coal Society,2009,34(10):1297-1304
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